Kinetic energy in the faster car is way too uzi fast to be stopped faster since it has less kodak potential energy. The slower car has more potential energy so it will be able to lil stop boat at a much smoother and shorter distance.
Answer:
Explanation:
Given:
- moment of inertia of the skater with extended arms,
- moment of inertia of the the skater with pulled-in arms,
- angular velocity of the skater with extended arms,
<u>Using the law of conservation of angular momentum:</u>
Given: Plank's constant h = 6.626 x 10⁻³⁴ J.s
Speed of light c = 2.998 x 10⁸ m/s
Wavelength λ = 500 nm convert to meter = 5 x 10⁻⁷ m
Required: Energy E =?
Formula: E = hc/λ
E = (6.626 X 10⁻³⁴ J.s)(2.998 X 10⁸ m/s)/5 x 10⁻⁷ m
E = 3.97 X 10⁻¹⁹ J or in termS of electron volt
E = 2.48 eV
Answer:
The amount of effort needed to move the box is 187.5 N
Explanation:
weight of the box = load moved by the ramp, L = 750 N
mechanical advantage of the ramp, MA = 4
effort needed to move the box, E = ?
Mechanical advantage is given as = Load / Effort
Effort = Load / Mechanical advantage
Effort = 750 / 4
Effort = 187.5 N
Therefore, the amount of effort needed to move the box on to the truck using a ramp is 187.5 N